Strengthening and weakening the connections between neurons, known as synapses, is vital to the brain's development and everyday function. One way that neurons weaken their synapses is by swallowing up receptors on their surfaces that normally respond to glutamate, one of the brain's excitatory chemicals
I believe the correct answer is 5 days a week are suggested in order to maintain your present fitness level.
#1 is false
2 false
3false
4D
5 C
6C
A. True, you can avoid heart disease by staying at a healthy weight.
